EP 0660178 A3 19951129 - Photographic element having a transparent magnetic layer and a process of preparing the same.
Title (en)
Photographic element having a transparent magnetic layer and a process of preparing the same.
Title (de)
Photographisches Element enthaltend eine durchsichtige magnetische Schicht und dessen Verfahren.
Title (fr)
Elément photographique ayant une couche magnétique transparente et procédé de préparation.
Publication
Application
Priority
US 17379393 A 19931222
Abstract (en)
[origin: US5395743A] A photographic element comprising a support, having at least a silver halide light-sensitive layer and a transparent magnetic recording layer, the transparent magnetic layer having ferromagnetic particles in a polymeric binder, ferromagnetic particles having a size of at least 30 m2/gm and being present in the transparent magnetic layer in a coverage of from about 1x10-11 mg/ mu m3 to about 1x10-10 mg/ mu m3, the polymeric binder containing up to about 25 weight percent based on the weight of the polymeric binder of a dispersant-cobinder comprising a poly(C2-4-alkyleneimine) carrying at least two mono- or poly(carbonyl-C1-7-alkyleneoxy) groups.
IPC 1-7
IPC 8 full level
G03C 1/00 (2006.01); G03C 1/04 (2006.01); G03C 1/043 (2006.01); G03C 1/38 (2006.01); G03C 1/95 (2006.01); G03C 5/14 (2006.01); G11B 5/633 (2006.01)
CPC (source: EP US)
G03C 5/14 (2013.01 - EP US); G11B 5/633 (2013.01 - EP US)
Citation (search report)
- [A] US 5252441 A 19931012 - JAMES ROBERT O [US], et al
- [A] US 4645611 A 19870224 - CAMPBELL FREDERICK [GB], et al
- [A] US 4820581 A 19890411 - SAITO SHINJI [JP], et al
- [A] US 4990276 A 19910205 - BISHOP JOHN F [US], et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
US 5395743 A 19950307; DE 69411140 D1 19980723; DE 69411140 T2 19990204; EP 0660178 A2 19950628; EP 0660178 A3 19951129; EP 0660178 B1 19980617; JP H07199386 A 19950804
DOCDB simple family (application)
US 17379393 A 19931222; DE 69411140 T 19941219; EP 94120135 A 19941219; JP 31633194 A 19941220